Rigibore Boring bar M5.0 FC 692 T

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50 international taper adjustable boring bar. Approximatelly 12" long, bores between 3.5 to 4.5" or so. Notch for flash change. 

Suitable for any machine tool with 50 International taper. This boring bar was used on an old Herbert milling machine before updating to CNC rendering the tool redundant. 

Two microbore units, one at 90 degrees and one as per photograph.